Fix unit tests depending on season being open

app/features/sendouq/core/ready-check.server.test.ts

@@ -21,6 +21,7 @@ import {
 	SENDOUQ_LOOKING_ROOM,
 	sqGroupWebsocketRoom,
 } from "../q-constants";
+import { pinClockInsideSeason } from "../tests/season-clock";
 import * as ReadyCheck from "./ready-check.server";
 import { refreshSendouQInstance, SendouQ } from "./SendouQ.server";
 
@@ -86,6 +87,8 @@ const confirmEveryoneReady = async (groupId: number) => {
 };
 
 describe("SendouQ ready check", () => {
+	pinClockInsideSeason();
+
 	let groups: Awaited<ReturnType<typeof setupMatchedUpGroups>>;
 
 	beforeEach(async () => {

app/features/sendouq/routes/q.ready.test.ts

@@ -20,6 +20,7 @@ import * as ReadyCheck from "../core/ready-check.server";
 import { refreshSendouQInstance, SendouQ } from "../core/SendouQ.server";
 import type { readySchema } from "../q-action-schemas";
 import { FULL_GROUP_SIZE, SENDOUQ } from "../q-constants";
+import { pinClockInsideSeason } from "../tests/season-clock";
 import { action as rawReadyAction, loader as rawReadyLoader } from "./q.ready";
 
 const readyLoader = wrappedLoader<Awaited<ReturnType<typeof rawReadyLoader>>>({
@@ -55,6 +56,8 @@ const setupReadyCheck = async () => {
 };
 
 describe("SendouQ ready check page", () => {
+	pinClockInsideSeason();
+
 	afterEach(() => {
 		Seasons.DANGEROUS_setSeasonEndedOverride(false);
 	});

app/features/sendouq/tests/season-clock.ts

@@ -0,0 +1,26 @@
+import { afterAll, beforeAll, vi } from "vitest";
+import * as Seasons from "~/features/mmr/core/Seasons";
+import invariant from "~/utils/invariant";
+
+const lastSeason = Seasons.list[Seasons.list.length - 1];
+invariant(lastSeason, "Expected at least one season");
+
+const insideASeason = new Date(
+	(lastSeason.starts.getTime() + lastSeason.ends.getTime()) / 2,
+);
+
+/**
+ * Pins the suite's clock inside a season, for the tests whose subject only happens
+ * while one is running. Seasons are a fixed list, so between the last one ending and
+ * the next one being added every such test would otherwise fail.
+ */
+export function pinClockInsideSeason() {
+	beforeAll(() => {
+		vi.useFakeTimers({ toFake: ["Date"] });
+		vi.setSystemTime(insideASeason);
+	});
+
+	afterAll(() => {
+		vi.useRealTimers();
+	});
+}